Joseph eomine smith



J. B. SMITH.

(ModeL) BOLT CUTTER.

No. 361,554. Patented Apr. 19,1887.

torneyJ' W a; l

wmmm har, Washington D c UNITED STATES PATENT OFFICE.

JOSEPH ROMINE SMITH, OF BROOKVILLE, ONTARIO, CANADA.

BOLT-CUTTER.

SPECIFICATION forming part of Letters Patent No. 361,554, dated April 19, 1887. Application filed August 10, 1886. Serial No. 210,573. (ModeLl To all whom it may concern.-

Be it known that I, JOSEPH ROMINE SMITH, a citizen of the United States, residing at Brockville, in the county of Leeds and Province of Ontario, Canada, haveinvented certain new and useful Improvements in Bolt-Cutters; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form apart of this specification.

Figure 1 of the drawings is a representation of a front elevation. Fig. 2 is a similar view with the strap removed. Fig. 3 is a transverse section on the line as 00, Fig. 1. Fig. 41's a bottom view of the tie-plate. Fig. 5 is a de tail section, and Fig. 6 is a detail view.

My invention relates to bolt-clippers for severing bolts;and it consists in the construction and novel combination of parts, as hereinafter described, and pointed out in the claims.

Referring by letter to the accompanying drawings, A B designate the cutting levers or blades of the bolt-clipper, said blades being provided at their upper ends, along their inner edges, with the beveled cutting-edges O D.

The blades A B are provided near their upper ends with circular seats E E, in which are placed the eccentric bearing-rings G H, said rings G H being held to their adjustments by set-screws I J, introduced from the back edges of said cutting levers or shears A B, and extending into the seats E E in said shears,and bearing againstthe rings G H,for said purpose.

The eccentric bearing-rings G H are provided in one of their sides with a recess, Z, for the purpose of receiving one end of a rod or other suitable device,whereby the said rings may be turned and adjusted, as will be presently explained. In practice I employ a wrench for turning these rings, which consists simply of a lever having an eye in one end to pass over the bolts, and has a stud or fixed pin on one side to enter the recesses Z of the rings; but it is obvious that a plain round rod may be used for this purpose.

K designates a tie-plate, which is provided with threaded bolts L M, which project vertically from the face of said tie-plate K.

The tie-plate is then cooled, and as it cools it shrinks, and the material of said tie-plate enters the annular groovesN in the bolts L M, and secures said bolts L M firmly in their seats in said tie-plates.

The cutting-levers A B are pivoted at their lower ends in bearing-seats in the upper ends of the power-levers P Q. said levers P Q being pivoted together upon the guide-pin R, provided in its head with a seat, S, made transversely through it, through which seat S the stem of the T-strap T passes and works when the bolt-clipper is operated. The upper end of the T-strap T is provided near its ends with bolt-holes, through which the threaded ends of the bolts L M project, and nuts U V are screwed upon the threaded ends of said bolts to secure the tie-plate and T-strap in place.

In adjusting my bolt-clipper'I remove the nuts on the screw-bolts L M and lift off the T-strap T, at the same time lifting the guide pin or stud R from its seat, thus disclosing the eccentric in each cutter or blade. By loosening the set-screws I J the eccentric-rings G H may be revolved on the screw-bolts L M by a rod or wrench placed in the recesses Z, as above described, until the cutters are properly adjusted, when the set-screws I J are again tightened and the T-strap replaced. The T- strap prevents oblique mot-ion of the cutters with reference to their operating-levers, owing to the fact that the stem of the T-strap. extends at right angles to the strap-head, and maintains said position at all times when the parts are secured together and are operated by said stem of the T-strap movingin the guidepin. v

I claim 1. As an improved article of manufacture, a bolt-cutter comprising two pivoted cuttingjaws, two pivoted hand-levers, a strap connecting the cutting-jaws, cam-rings surrounding the connecting-bolts of the strap, and an integral arm of the strap passing through an eye in the connecting-bolt of the hand-levers, l holding the said rings in their adjusted posito substantially as specified. tions, substantially as specified.

2. As an improved article of manufacture, In testimony whereof I affix my signature in a bolt-cutter comprising two pivoted handpresence of two witnesses. 5 levers, a T-plate connecting the cutting-jaws T 4 by bolts, with its longer branch extending JOSEPH ROMILD SMITH through an eye in the connecting-bolt of the Witnesses: hand-levers, cam-rings surrounding the bolts W. J. DAVIS, of the connectingplates, and set-screws for THos. W. A; KING. 

